My final advice would be: use the basic frame structure as a constraint (limitation breeds creativity, Mark Rosewater says), and if needed work from there to create new details that are really meaningful for the game, and be more careful not to create more noise
If you can do weird life total stuff, though, this could be a fun puzzle piece
Unless they win the game on the spot, or they have some addition to the card, (such as the milling added to the countering of Induce Paranoia) the vast majority of these cards are card disadvantage
If you control two copies of Echoes of Eternity, abilities of colorless spells and other colorless permanents you control trigger three times
Your goal is to claim six prize cards before your opponent does
(If unsolved, solve at the beginning of your end step.) Solved Whenever you cast a nonlegendary creature spell, copy that spell